The mean is 590.45 and the variance is 0.053.
What is arithmetic mean and variance?
A mean refers to a representative of a list of numbers, usually the sum of the numbers divided by how many numbers are in the list.The expectation of a random variable's squared divergence from its population mean or sample mean is known as its variance.Now,
Adding together all the numbers and dividing by the total number of data points yields the mean:=> Sum of all the values = 590.1+590.2+590.3+590.4+590.5+590.6+590.7+590.8 = 4723.6
=> Since 8 data values are present,
=> Mean = 4723.6/8 = 590.45
We deduct each data value from the mean in order to calculate the variance. Next, we square this discrepancy to determine the average square:=> 590.1 - 590.45 = -0.35;
=> (-0.35)² = 0.1225
=> 590.2 - 590.45 = -0.25;
=> (-0.25)² = 0.0625
=> 590.3-590.45 = -0.15;
=> (-0.15)² = 0.0225
=> 590.4-590.45 = -0.05;
=> (-0.05)² = 0.0025
=> 590.5-590.45 = 0.05;
=> (0.05)² = 0.0025
=> 590.6-590.45 = 0.15;
=> (0.15)² = 0.0225
=> 590.7-590.45 = 0.25;
=> (0.25)² = 0.0625
=> 590.8-590.45 = 0.35;
=> (0.35)² = 0.1225
Thus, variance = \(\frac{(0.1225+0.0625+0.0225+0.0025+0.0025+0.0225+0.0625+0.1225)}{8}\) = 0.42/8 = 0.0525 ≈ 0.053
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how to factor quadratics with other leading coefficients
To factor quadratics with leading coefficients other than 1, you can follow these steps:
Write down the quadratic equation in the form ax^2 + bx + c = 0, where a, b, and c are coefficients.If the leading coefficient (a) is not 1, divide the entire equation by the leading coefficient to make it equal to 1. This step is important to simplify the factoring process.Factor the simplified quadratic equation using various factoring techniques such as the quadratic formula, grouping, or using patterns like the difference of squares or perfect square trinomials. Once you have factored the simplified quadratic equation, multiply the factored terms by the leading coefficient (a) to obtain the factored form of the original equation.Check your factoring by expanding the factored form to see if it simplifies back to the original quadratic equation.
Remember that factoring quadratics with leading coefficients other than 1 may involve more complex algebraic techniques, and in some cases, the quadratic equation may not factor easily. In such cases, you can resort to using the quadratic formula to find the roots of the equation.
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Factor the given expression completely and show your work. 6x^2-5x-21. Check your answer and show that work as well.
PLSS SOLVEEEEE GIVING BRAINILYYYYYYYY!!!!!!!!!
Answer:
(2x + 3)(3x - 7)
Step-by-step explanation:
Factorize 6x² - 5x - 21
Find two numbers which are factors of the product of the coefficient of x² and the constant, and sum to the coefficient of x.
coefficient of x² mulitplied by the constant = 6 x -21 = -126
So we need to find two numbers that multiply together to make -126 and sum to -5.
Factors of -126 that sum to -5: 9 and -14
As 9 x -14 = -126, and 9 - 14 = -5
Rewrite the center term of the quadratic as these numbers, so - 5x becomes 9x - 14x:
⇒ 6x² + 9x - 14x - 21
Factorize each pair of terms, checking that the bracket created is the same:
⇒ 3x(2x + 3) - 7(2x + 3)
The first bracket is the common factor of (2x + 3) and the second bracket is the factorized terms outside of each bracket (3x - 7). So the final factorization is:
(2x + 3)(3x - 7)
The total cost for Sophia to build b birdhouses is represented by the function f(b)=3.5b+24. What does the value 3.5 represent in this situation?
Answer:
For each birdhouse built, the cost increases by $3.50
Step-by-step explanation:
Are these congruent by SSS, SAS, AAS, ASA?
Answer:
Step-by-step explanation:
ASA
need help please please please please
To join a gym, there is a monthly fee of $12 and a $5 fee per workout class you take. Which of the following functions would show the cost, in dollars, for a month that she takes w workout classes?
C(w) = 12w
C(w) = 5w + 12
C(w) = 12 + 5w
C(w)= 17w
Answer:
\(C(w) = 5w + 12\)
\(C(w) = 12+5w\)
Step-by-step explanation:
Given information:
- Monthly fee of $12
- $5 fee per workout class
- \(w\) represents the workout classes taken for a month
- - - -
With the given information, we can conclude that \(C(w)=\) workout fee + monthly fee.
Workout fee = \($5w\)
Monthly fee = \($12\)
∴ \(C(w) = 5w + 12\) or \(C(w) = 12+5w\) (they are the same)
Hope this helps :)
directions: Find the distance between each pair of points
(-4, 6) and (3, -7)
According to the solving the distance between two points is:
= 14.77
What is an example of a distance formula?In coordinate geometry, the distance formula is used to calculate the actual distance between two points. The formula for calculating the distance between two locations (x1,y1) (x 1, y 1) and (x2,y2) (x 2, y 2) is D=(x2x1)2+(y2y1)2 D = (x 2 x 1) 2 + (y 2 y 1) 2.
What is the name of the distance between two points?The length of a line segment seems to be the distance between two locations. Congruent segments are those with the same length. By drawing a line with a ruler, we may compute the approximate distance between two points.
According to the given data:Given points: (-4, 6) and (3, -7)
X₁ = -4
Y₁ = 6
X₂ = 3
Y₂ = -7
We know that the distance between two points:
distance = √((x₂ - x₁)²+(y₂ - y₁)²)
= √((3 - (-4))²+((-7) - 6)²)
= √((3 + 4)²+(-13)²)
= √((7)²+(-13)²)
= √((49)+(169))
= √(218)
= 14.77
According to the solving the distance between two points is:
= 14.77
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The following list details the numbers of tickets sold for a talent show grade 9:22; grade 10:32; grade 11: 41; and grade 12:30. What are the
domain and range of this relation?
A domain: (22, 32, 41, 30); range: {9, 10, 11, 12}
B. domain: {9, 22, 10, 32); range: {11, 41, 12, 30}
C. domain: {9, 10, 11, 12); range: (22, 32, 41, 30)
D
domain: {11, 41, 12, 30}; range: {9, 22, 10, 32)
Answer: C. domain: {9, 10, 11, 12); range: (22, 32, 41, 30)
Step-by-step explanation:
The data set is:
(9, 22)
(10,32)
(11, 41)
(12, 30).
In the usual notation, the number at the left is the input (belons to the domain) and the number in the right is the output (belongs to the range).
Then the domain would be:
{9, 10, 11, 12}
and the range:
{22, 32, 41, 30}
The correct option is C
see screenshot for the question
Triangle proportionality theorem and the segment addition postulate, indicates that A_F : AT = A_F : 4×A_F, therefore;
A_F : AT = 1 : 4
What is the triangle proportionality theorem statement?The triangle proportionality theorem states that a segment drawn in a triangle, such that it is parallel to one side of the triangle and intersects the other two sides at two distinct points, then the proportion in which the segment divides the other two sides are the same.
The specified details of the triangle ΔABC are;
The location of the point D = AB, the location of the point B = AC
The point of intersection of the angle bisector of angle ∠A and DE = F
The point of intersection of the angle bisector of angle ∠A and BC = Point T
AD = 1, DB = 3, AE = 2, EC = 4
Drawing a line CU parallel to DE from point C to intersect AB at U, according to the triangle proportionality theorem, we get;
AE : EC = 2 : 4 = AD : DU = A_F : FV
AD : DU = 1 : 2
A_F : FV = 1 : 2
Therefore; FV = 2 × A_F
FV : VT = DU : BU = 2 : 1
FV = 2 × VT
2 × VT = 2 × A_F by substitution property, therefore;
FV = 2 × A_F
AT = A_F + FV + VT (segment addition postulate)
Therefore; AT = A_F + 2 × A_F + A_F = 4×A_F
A_F : AT = A_F : 4 × A_F = 1 : 4
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what is the circumference of a circle that has a radius of 14?
I need this by today plz answer...
Answer:
C≈87.96
r Radius 14
Funke, Adamu, Shehu, Kwame and Tanko play a game of cards. Funke says to Adamu, " If you give me 5 cards, you will have as many as Tanko has and if I give you 4 cards, you will have as many as Kwame has." Funke and Adamu together have 13 cards more than what Kwame and Tanko together have. If Adamu has 2 cards more than what Shehu has and the total number of cards be 133, how many cards does Adamu have?
Answer:
809
Step-by-step explanation:
787 susifx
describe in lay terms what information the z scores give that the original nonstandardized heights do not.
The Z scores a way to standardize and compare data, as well as to identify outliers.
What do we mean by Z scores?In simple terms, Z bases give information about how far a data point is from the means of the data set in standard deviation units. The original non-standardized heights, on the other hand, did not guarantee this information.
Z scores are used to standardize data and are useful when comparing two or more different data sets. By converting the original data to Z scores, we can compare data that is on different scales or has different units.
For example, suppose we have two data sets: one with heights measured in inches and the other with weights measured in pounds. We cannot compare these data sets directly as they are at different scales. However, by converting them to Z scores, we can compare them on the same scale.
In addition, the obtained Z's provided a way to identify outliers in the data set. Outliers are data points that are unusually far from the means of the data set. Z scores greater than 3 or less than -3 are generally considered outliers.
In general, the obtained bases are a way to standardize and compare data, as well as to identify outliers.
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3/3xy + 2y/3x whats the lowest common denominator
Answer:
3xy
Step-by-step explanation:
simpled out to
xy+2y/3x
common factor 3xy
3x^2y^2/3xy + 2y^2/3xy
Answer:
LCM = 3xy
Step-by-step explanation:
3 | 3xy , 3y
x | xy , y
y | y , y
1 , 1
\(LCM = 3 \times x \times y = 3xy\)
Solving :
\(\frac{3}{3xy} + \frac{2y}{3x}\\\\\frac{3}{3xy} + \frac{2y \times x}{3y \times x} \ \ \ \ \ \ [ \ multiply \ and \ divide \ 2nd \ term \ by\ x \ to \ make\ the\ denominators \ same \ ]\\\\\frac{3}{3xy} + \frac{2xy}{3xy}\\\\\frac{3+2xy}{3xy}\)
Based on the information given, compute yearly total dividends as well as dividends per share paid to common and preferred stockholders. There are 5,000 shares of $50 par value preferred stock outstanding, and 25,000 shares of common stock outstanding. Preferred stock has an 8 percent guaranteed rate of return. Dividends are declared of $1. 25 per share of common stock, together with the guaranteed rate for preferred stock. Common Stock: $
Preferred Stock: $
1. Yearly total dividends paid are $151,250.
2. The dividends per share are $1.25 for common stockholders
3. The dividends per share are $4 for preferred stockholders.
What are yearly total dividends and dividends per share?We must calculate amount of dividends paid to the preferred stockholders in order to get dividends per share for common and preferred stockholders.
The per dividends paid to the preferred stockholders is:
= $50 par value x 8% guaranteed rate of return
= $4 per share
The total dividends paid to preferred stockholders:
= $4 per share x 5,000 shares
= $20,000
The per dividends paid to those stockholder is calculated as:
= Common stock + Preferred stock
= $1.25 per share + $4 per share
= $5.25 per share
The total dividends paid to common stockholders:
= $5.25 per share x 25,000 shares
= $131,250.
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Suppose the following sequence of matrix operations was used to translate AABC.
The horizontal and vertical translations applied to ΔABC:
A horizontal translation of 4 units right and a vertical translation of 7 units down has been applied to ΔABC.
What is matrix ?It is possible to represent linear transformations and solve systems of linear equations using matrices, which are collections of numbers arranged into a predetermined number of rows and columns. A matrix is a rectangular array of letters, numbers, or expressions in mathematics that are arranged in rows and columns. As well as in the sciences like physics, engineering, and economics, matrices are frequently used in computer graphics, image processing, and data analysis. Data manipulation and analysis can be done using well-defined matrix operations like addition, subtraction, multiplication, and inversion.
Given that,
\(\left[\begin{array}{ccc}1&1&4\\4&1&1\\\end{array}\right] + \left[\begin{array}{ccc}-7\\4\end{array}\right] * \left[\begin{array}{ccc}1&1&1\\\\\end{array}\right]\) = ?
After using matrix operation it can be further solved as,
\(\left[\begin{array}{ccc}5&5&8\\-3&-6&-6\\\end{array}\right]\)
Hence, A horizontal translation of 4 units right and a vertical translation of 7 units down has been applied to ΔABC.
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a cell phone company charges an initial price of $500 for a new phone and then $60 each month after the purchase. if c (t) is a rational function that represents the average monthly cost of owning the cell phone, what is the range of the function? r: (0, 500) r: (60, 560) r: ℝ r: (–[infinity], [infinity])
The range of C(t), the function of the average monthly cost of owning the cell phone, is (60, 560].
The range of a function is the set of all y-values obtained after substituting all possible x-values.
Steps to find the range of a function:
Find the possible domain of the function.For the given problem:
The price of the device = $500
Monthly plan = $60
C(t) is defined as the average monthly cost of owning the phone.
Let t = number of months of owning the cell phone.
Then, total cost after t month = 500 + 60 t.
Hence, the average is:
C(t) = (500 + 60t)/t
C(t) = 500/t + 60
For t = 1, C(1) = 500 + 60 = 560
For t > 1, C(t) < 560
Therefore the maximum value of C(t) = 560
For t →∞ then 500/t will approach zero, hence:
C(t) →(0 + 60), or C(t) will approach 60.
Therefore, we can conclude that 60 < C(t) ≦ 560, or the range of C(t) is (60, 560].
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Different functions can have local variables with the same name. Select one: O True False
set of statements that belong together as a group and contribute to the function definition is known as a Select one: O a block b.loop Oc decision Od set
False. Different functions cannot have local variables with the same name because each function has its own isolated scope.
In programming, local variables are variables that are declared and used within a specific function. They are only accessible within that function and cannot be accessed or modified by other functions. Local variables are used to store temporary data or intermediate results within the function's scope.
It is important to note that local variables have a limited scope, meaning they are only valid and accessible within the block of code where they are defined. Once the function execution completes, the local variables cease to exist.
Since different functions have their own separate scopes, it is possible to define local variables with the same name in different functions. This is because each function's local variables are independent of each other and do not interfere with one another.
For example, consider two functions, function A and function B. Both functions can have their own local variable named "x" without any conflict or issue. The "x" variable in function A has no connection or impact on the "x" variable in function B. They are distinct and exist within their respective function scopes.
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Different functions can have local variables with the same name without conflict, as they are specific to their function scope. And a group of logically connected statements contributing to the function definition is known as a block.
Explanation:"True, different functions can have local variables with the same name". Local variables are specific to the function they are declared in and are not known to other functions. Hence, similar names can be used in different function scopes without any conflict.
A set of statements that belong together as a group and contribute to the function definition is known as a block. In programming, a block is a set of logically grouped statements, enclosed in curly braces ' { }'. For instance, the set of statements within a function or a loop or a decision control structure (like if, switch) forms a block.
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someone please help me giving brainliest
Answer:
Step-by-step explanation:
a racing car has a uniform acceleration of 4m/sec^2? what distance will it cover in 10 second after start.
Answer:
Easy
Step-by-step explanation:
4m a second so 40 seconds cause4 x 10
Answer:
im not sure
1398100 meter
Step-by-step explanation:
4+4^(2)+4^(3)+4^(4)+4^(5)
+4^(6)+4^(7)+4^(8)+4^(9)
+4^(10)=1398100
Is this correct if not what is it?
if x = -1 and y= -3
y= 2x-1
-3=2(-1)-1
-3= -2-1
-3= -3
if x=0and y = -1
y=2x-1
-1=2(0)-1
-1=0-1
-1= -1
if x=1 and y=1
y=2x-1
1=2(1)-1
1=2-1
1=1
if x=2 and y=3
y=2x-1
3=2(2)-1
3=4-1
3=3
SO IT'S CORRECT ❤
THANJ YOU
entral high school is competing against northern high school in a backgammon match. each school has $3$ players, and the contest rules require that each player play $2$ games against each of the other school's players. the match takes place in $6$ rounds, with $3$ games played simultaneously in each round. in how many different ways can the match be scheduled?
The match can be scheduled in 900 different ways.
Here, the number of players from each school = 3.
Let us assue that the players of the first school be A, B, and C.
And the players of the second school be X, Y, and Z.
Here, each player from the first school has to play twice with each player from the second school.
We can organize the schedule into six different rounds, i.e.,
R1 : AX BY CZ
R2 : AX BZ CY
R3 : AY BX CZ
R4 : AY BZ CX
R5 : AZ BX CY
R6 : AZ BY CX
So, the number of possible ways to do this would be : 6! = 720 ways.
Now, three rounds are played simultaneously in each round.
R1 : AX BZ CY
R2 : AX BZ CY
R3 : AY BX CZ
R4 : AY BX CZ
R5 : AZ BY CX
R6 : AZ BY CX
And R1 : AX BY CZ
R2 : AX BY CZ
R3 : AY BZ CX
R4 : AY BZ CX
R5 : AZ BX CY
R6 : AZ BX CY
The total number of possible ways for the second case would be twice of 6! / (2! 2! 2!), which is equal to 90+ 90 = 180.
Therefore, the total number of ways in which the match can be scheduled is 720 + 180 = 900.
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The complete question is:
central high school is competing against northern high school in a backgammon match. each school has three players, and the contest rules require that each player play two games against each of the other school's players. the match takes place in six rounds, with three games played simultaneously in each round. in how many different ways can the match be scheduled?
-5x <2
true false
x=-2 x=-2
x=1 x=1
x=2 x=2
x=-1 x= -1
The inputs that are solutions for the inequality are:
x = 2
x= 1
For which inputs is the inequality true?Here we have the following inequality:
-5x < 2
We want to see which of the given inputs is a solution for this.
First we can isolate the variable in our inequality, so we get:
-5x < 2
-2 < 5x
-2/5 < x
-0.4 < x
So any value larger than -0.4 is a solution, from the given options, the two that are solutions are:
x = 1
x = 2.
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What is 63,612 in expanded form?
Answer:
answer is 60,000+3,000+600+10+2
How do you find the domain?
The domain of a function is the set of numbers that can go into a given function.
The set of input values (x) for which a function generates an output value is known as the domain of the function (y).
we can write \(y = f(x).\)
domain is the full set of x-values that can be plugged into a function to produce a y-value.
The most effective approach to finding a domain will depend on the type of function.
The domain is expressed using an open bracket or parenthesis, the domain's two endpoints separated by a comma, and then a closed bracket or parenthesis.
To find domain of function we should know the property of that function like what the function can take inside it.
Like if we consider square root function \(\sqrt{x}\) so inside root negative numbers are not allowed so value of x should be positive means x>=0
So domain of square root function [0, ∞).
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What is the simplified form of the quantity 15 x y squared over x squared plus 5x plus 6 all over the quantity 5 x squared y over 2x squared plus 7x plus 3? (1 point) Group of answer choices 3y times the quantity 2x plus 1 over x times the quantity x plus 2 x times the quantity x plus 2 over 3y times the quantity 2x plus 1 x times the quantity x minus 2 over 3y times the quantity 2x minus 1 3y times the quantity 2x minus 1 over x times the quantity x minus 2
The simplifed form is :A 3y(2x+1)/ x(x+2) 3y times the quantity 2x plus 1 over x times the quantity x plus 2.
What is a simplification of an expression?Usually, simplification involves proceeding with the pending operations in the expression.
Simplification usually involves making the expression simple and easy to use later.
Given;
15xy²/(x² + 5x +6) ÷ ((5x²y/(2x²+7x+3))
We can factorize expressions;
x² + 5x +6 = (x+2)(x+3)
2x²+7x+3 =(2x+1)(x+3)
Therefore we have;
15xy²/(x+2)(x+3) ÷ (5x²y/(2x+1)(x+3))
we can multiply with the reciprocal;
15xy²/(x+2)(x+3) × ((2x+1)(x+3))/5x²y
By Simplifying;
3y/(x+2) × (2x+1)/x
We get; 3y(2x+1)/ x(x+2)
= 3y(2x+1)/ x(x+2)
The answer is :A 3y(2x+1)/ x(x+2) 3y times the quantity 2x plus 1 over x times the quantity x plus 2.
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Andy goes shopping with his friend Silvio, an exchange student from Brazil. Silvio wants to know what everything costs in
Brazilian reals. He knows 1 American dollar is equivalent to 2 Brazilian reals. Let x represent American dollars and y represent Brazilian reals. This situation is graphed below. Which equation represents this situation?
A) y=-2x
B) y=4x
C) y-2x
D) y=1/2x
Answer:
Step-by-step explanation:
answer is b
A farmer wants to fence an area of 6 millon square feet in a rectangutor field and then divide it in half with a fence paraliel to one of the sides of the rectangle. Let y represent the length (in feet) of a side perpendicular to the dividing fence, and let x represent the length (in feet) of a side parallel to the dividing fence. Let Frepresent the fengeh of fencing in feet. Write an equation that represents F in terms of the vanable x. F(x)= Find the derluative F′(x), f−1(x)= Find the critical numbers of the function, (Enter your answers as a coerma-separated list. If an answer does not exist, enter owE) What should the lengttis of the sides of the rectangular field be ( in ft) in order to minimize the cost of tho fence? smaller vahue targer value.
Answer:
F(x) = 2x +18×10⁶/xF'(x) = 2 -18×10⁶/x²{-3000, 0, 3000} — critical numbers2000 ft, 3000 ft — dimensionsStep-by-step explanation:
You want an equation for the length of fence, its derivative, its critical numbers, and the values of the field dimensions for a rectangular area of 6M square feet that is x feet long and y feet wide with a dividing fence that is also y-feet long. The dimensions minimize the fence length.
Fence lengthThe field is rectangular with one side being x and the other being y. The area is ...
Area = x·y = 6×10⁶
The total length of fence is ...
F(x, y) = 2x +3y
Using the area relation we can write y in terms of x:
y = 6×10⁶/x
So, the length of fence required is given by the function ...
F(x) = 2x + 3(6×10⁶/x)
F(x) = 2x + 18×10⁶/x
DerivativeThe derivative can be found using the power rule. It is ...
F'(x) = 2 -18×10⁶/x²
Critical numbersThe critical numbers are the values of x that make the derivative undefined or zero. With x in the denominator, the derivative will be undefined when x=0.
Solving F'(x) = 0, we have ...
0 = 2 - 18×10⁶/x²
18×10⁶ = 2x² . . . . . multiply by x², add 18×10⁶
9×10⁶ = x² . . . . . . divide by 2
±3000 = x . . . . . . square root
The critical numbers are {-3000, 0, 3000}.
DimensionsThe length of fence is minimized when x = 3000 and y = 6×10⁶/3000 = 2000.
The field is 2000 ft by 3000 ft.
__
Additional comment
You will note that the total lengths of fence in the x- and y-directions are the same. They are both 6000 feet, half the total length of fence required. This is the generic solution to this sort of cost minimizing problem.
For this single-partition case, the long side is x = √(3A/2) for area A. In general, the x dimension is √(Ny/Nx·A) where Nx and Ny are the numbers of fence segments in each direction. This remains true if one side has no fence segment because a "river" or "barn" is used as the barrier.
<95141404393>
Use the distributive property to write an equivalent expression.
3(7 p - 3 q + 9)
Answer:
27p - 9q + 27
Step-by-step explanation:
3(7p - 3q + 9) ← multiply each term in the parenthesis by the 3
= 21p - 9q + 27
3x - 51y + 24 and 3(x- 17y + 8)
Answer:
They are equal if that’s what you’re asking
Step-by-step explanation:
the answer is 24 ....
Answer:
A equation with 24 as an answer would be 6*4
Step-by-step explanation: